package com.xhdx;

import java.io.FileNotFoundException;
import java.io.PrintWriter;

public class Test2 {

    public static void main(String[] args) {
        Integer num1 = 12;
        Integer num2 = 12;
        System.out.println(num1 == num2);//打印true

        Integer num5 = Integer.valueOf(12);
        Integer num6 = Integer.valueOf(12);
        System.out.println(num5 == num6);//打印true

        Integer num3 = 129;
        Integer num4 = 129;
        System.out.println(num3 == num4);//打印false
        
        String p = "d://1.txt";
        try {
            PrintWriter a = new PrintWriter(p);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}
